diff --git a/KosherSwift.xcodeproj/project.pbxproj b/KosherSwift.xcodeproj/project.pbxproj
index c4eb565..efdac05 100644
--- a/KosherSwift.xcodeproj/project.pbxproj
+++ b/KosherSwift.xcodeproj/project.pbxproj
@@ -371,7 +371,7 @@
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
-				SUPPORTED_PLATFORMS = "watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
 				SUPPORTS_MACCATALYST = YES;
 				SWIFT_ACTIVE_COMPILATION_CONDITIONS = "DEBUG $(inherited)";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
@@ -431,7 +431,7 @@
 				LOCALIZATION_PREFERS_STRING_CATALOGS = YES;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
-				SUPPORTED_PLATFORMS = "watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
 				SUPPORTS_MACCATALYST = YES;
 				SWIFT_COMPILATION_MODE = wholemodule;
 				VERSIONING_SYSTEM = "apple-generic";
@@ -442,6 +442,7 @@
 		CEDE8FC32B3272B700D74115 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				BUILD_LIBRARY_FOR_DISTRIBUTION = YES;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
@@ -472,8 +473,8 @@
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SDKROOT = auto;
 				SKIP_INSTALL = YES;
-				SUPPORTED_PLATFORMS = "appletvos appletvsimulator driverkit iphoneos iphonesimulator macosx watchos watchsimulator";
-				SUPPORTS_MACCATALYST = NO;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
 				SUPPORTS_MAC_DESIGNED_FOR_IPHONE_IPAD = YES;
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_VERSION = 5.0;
@@ -486,6 +487,7 @@
 		CEDE8FC42B3272B700D74115 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				BUILD_LIBRARY_FOR_DISTRIBUTION = YES;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
@@ -516,8 +518,8 @@
 				PRODUCT_NAME = "$(TARGET_NAME:c99extidentifier)";
 				SDKROOT = auto;
 				SKIP_INSTALL = YES;
-				SUPPORTED_PLATFORMS = "appletvos appletvsimulator driverkit iphoneos iphonesimulator macosx watchos watchsimulator";
-				SUPPORTS_MACCATALYST = NO;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
 				SUPPORTS_MAC_DESIGNED_FOR_IPHONE_IPAD = YES;
 				SWIFT_EMIT_LOC_STRINGS = YES;
 				SWIFT_VERSION = 5.0;
@@ -530,6 +532,7 @@
 		CEDE8FC62B3272B700D74115 /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
@@ -542,8 +545,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.ej.KosherSwiftTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = auto;
-				SUPPORTED_PLATFORMS = "appletvos appletvsimulator driverkit iphoneos iphonesimulator macosx watchos watchsimulator";
-				SUPPORTS_MACCATALYST = NO;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
 				SUPPORTS_MAC_DESIGNED_FOR_IPHONE_IPAD = YES;
 				SWIFT_EMIT_LOC_STRINGS = NO;
 				SWIFT_VERSION = 5.0;
@@ -556,6 +559,7 @@
 		CEDE8FC72B3272B700D74115 /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
+				ALLOW_TARGET_PLATFORM_SPECIALIZATION = YES;
 				ALWAYS_EMBED_SWIFT_STANDARD_LIBRARIES = YES;
 				CODE_SIGN_STYLE = Automatic;
 				CURRENT_PROJECT_VERSION = 1;
@@ -568,8 +572,8 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.ej.KosherSwiftTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = auto;
-				SUPPORTED_PLATFORMS = "appletvos appletvsimulator driverkit iphoneos iphonesimulator macosx watchos watchsimulator";
-				SUPPORTS_MACCATALYST = NO;
+				SUPPORTED_PLATFORMS = "xrsimulator xros watchsimulator watchos macosx iphonesimulator iphoneos driverkit appletvsimulator appletvos";
+				SUPPORTS_MACCATALYST = YES;
 				SUPPORTS_MAC_DESIGNED_FOR_IPHONE_IPAD = YES;
 				SWIFT_EMIT_LOC_STRINGS = NO;
 				SWIFT_VERSION = 5.0;